Phonography.



WITNESSES.

I. KITSEE.

PHONOGRAPHY.

APPLICATION FILED AUG. 1, 1907.

ORIGINAL TmlvsP/wf/vr PIE-CORD Sou/VD AMPL/FY/m; RECORD M EN TOR PATENTED JAN. 28, 1908.

. ISIDOR Klrsnn,

OF PHILADELPHIA, PENN SYLVANIA'.

PHONOGRAPHY.

Specification of Letters Patent.

Patented Jan. 28, 1908.

Application filed August 1' 1907. Serial No. 386.676.

To all whom it may concern:

Be it known that I, IsrDoR KIrsnE, citizen of the United States, residing at Philadelphia, in the county ofPhiladelphia and State of Pennsylvania, have invented certain 'new and useful Im rovements in Phonography, of which the f0 lowing is a specifications.

My invention relates to an improvement in phonography.

Its object is to increase the efliciency of' phonographic records by producing them in such manner as to impart thereto capacity for amplifying the sound in the reproduction of the sound the necessity for employing mechanical dewaves, and thereby overcoming vices to obtain such amplification.

The underlying principle of my invention consists in the enlargement of the original record and also in the production of copies, from said enlargement.

In the drawings, Figure 1 is a plan view conventionally illustrating an original transof light with a material parent record. Fig. 2 1s a similar View of a sound amplifying copy of the record disclosed in Fig. 1. The mode of procedure is as follows I, first, prodqce the original record in a manner, so that the same can be photographed. I, preferably, produce the original record on a material transparent to the rays opaque to said rays. A glass plate, or a sheet of tracing cloth, is well adapted for the purpose in question, and the lines representing the sound waves may be traced thereon with a colored crayon, or a Y free flowing colored liquid.

The so produced original record is then I subjected to an enlargement process with the aid of photography; that 1s, an enlarged photographic copy is taken from the original.

.I do-not need to describe here the method of talring enlarged photographic copies from originals, as this process is well understood by persons versed in the art.

The'plate on which the enlarged copy is produced is, preferably, of a material transparent .to the rays of light, and as the photographed phonogra hic lines are 0 aque to the rays of light, it is obvious that this enlarged copy can be used in the same manner as the original may be used if enlarged copies were not necessary. From these enlarged copies ,I produce commercial copies,'by prefducing the original record process, a process which is well understood by persons practicing the art.

By way of illustration of the hereindescribed invention, Ihave shown conventionally in Fig. 1 an original transparent record, the numeral 1 designating. the body thereof, and 2 the lines representing the sound waves, While in Fig.2 is shown asound amplifying copy. In the latter the numeral 3 designates the body of the record and 4 the ai'nplifying lines. w

The great advantage of being able to have commercial copies which. reproduce the sound waves in an enlarged volume and with greater force is readily appreciated, and with the above described method, it lies in the power of the person producing the original and copies to so enlarge the original that any volume of sound may be produced from the commercial copy. It willthus be seen that the present invention enables commercial records to be produced capable of amplifying the sound, or increasing the volume of sound over the original records, and thus the necessity for employing mechanical devices for obtaining such amplification is entirely overcome.

Having now described my invention, what I claim as new and desire to secure by letters Patent is I 1. The method of producing phonographic records capable of amplifying the sound volume of the originals, consisting in first obtain ing an enlarged photographic copy from the original record, and then producing commer- J cial copies from said enlarged copy.

2 The method of producing phonographic records capable of amplifying the sound volume of the originals, consisting in first producing the original record upon a transparent base by outliningthe sound Waves thereon through the medium of an opaque material,

enlarging photographically the record so produced, and then producing commercial copies from the enlargement of the original.

3. The method of producing phonographic records capable of amplifying the sound volume of the originals, consisting in first proupon a transparen't base by depositing thereon an opaque material in outline of the soundwaves, enlarging photographically the record so produced,

and then producing commercial copies from duced, and then producing commercial copthe enlargement of the original. ice from the enlargement of the original.

4. The method of producing phonographlic In testimony whereof I afiix my signature 5 record? capable of amplifying the SOfiUrIId VOlin presence of two Witnesses.

ume 0 t e origina s, consisting in st producing the original record upon a transpar- ISIDOR KITSEE ent base by imparting to the latter an opaque Witnesses: 1 'outline conforming to the sound Waves, en- EDITH R. STILLEY, 10 larging photographioally the record so pro- E MARY C. SMITH 

